css.c File Reference

#include <linux/module.h>
#include <linux/init.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/errno.h>
#include <linux/list.h>
#include <linux/reboot.h>
#include <linux/suspend.h>
#include <linux/proc_fs.h>
#include <asm/isc.h>
#include <asm/crw.h>
#include "css.h"
#include "cio.h"
#include "cio_debug.h"
#include "ioasm.h"
#include "chsc.h"
#include "device.h"
#include "idset.h"
#include "chp.h"

Go to the source code of this file.

Data Structures
struct	cb_data

Macros
#define	KMSG_COMPONENT   "cio"
#define	pr_fmt(fmt)   KMSG_COMPONENT ": " fmt

Functions
int	for_each_subchannel (int(*fn)(struct subchannel_id, void *), void *data)
int	for_each_subchannel_staged (int(*fn_known)(struct subchannel *, void *), int(*fn_unknown)(struct subchannel_id, void *), void *data)
void	css_sch_device_unregister (struct subchannel *sch)
	EXPORT_SYMBOL_GPL (css_sch_device_unregister)
void	css_update_ssd_info (struct subchannel *sch)
int	css_probe_device (struct subchannel_id schid)
struct subchannel *	get_subchannel_by_schid (struct subchannel_id schid)
int	css_sch_is_valid (struct schib *schib)
	EXPORT_SYMBOL_GPL (css_sch_is_valid)
void	css_sched_sch_todo (struct subchannel *sch, enum sch_todo todo)
	EXPORT_SYMBOL_GPL (css_sched_sch_todo)
void	css_schedule_eval (struct subchannel_id schid)
void	css_schedule_eval_all (void)
void	css_wait_for_slow_path (void)
void	css_schedule_reprobe (void)
	EXPORT_SYMBOL_GPL (css_schedule_reprobe)
	subsys_initcall (channel_subsystem_init)
int	css_complete_work (void)
	subsys_initcall_sync (channel_subsystem_init_sync)
void	channel_subsystem_reinit (void)
int	sch_is_pseudo_sch (struct subchannel *sch)
int	css_driver_register (struct css_driver *cdrv)
	EXPORT_SYMBOL_GPL (css_driver_register)
void	css_driver_unregister (struct css_driver *cdrv)
	EXPORT_SYMBOL_GPL (css_driver_unregister)
	MODULE_LICENSE ("GPL")

Variables
int	css_init_done = 0
int	max_ssid
struct channel_subsystem *	channel_subsystems [__MAX_CSSID+1]
struct workqueue_struct *	cio_work_q

Macro Definition Documentation

#define KMSG_COMPONENT   "cio"

Definition at line 10 of file css.c.

#define pr_fmt

(

fmt

)

KMSG_COMPONENT ": " fmt

Definition at line 11 of file css.c.

Function Documentation

void channel_subsystem_reinit

(

void

)

Definition at line 1060 of file css.c.

int css_complete_work

(

void

)

Definition at line 1032 of file css.c.

int css_driver_register

(

struct css_driver *

cdrv

)

css_driver_register - register a css driver : css driver to register

This is mainly a wrapper around driver_register that sets name and bus_type in the embedded struct device_driver correctly.

Definition at line 1255 of file css.c.

void css_driver_unregister

(

struct css_driver *

cdrv

)

css_driver_unregister - unregister a css driver : css driver to unregister

This is a wrapper around driver_unregister.

Definition at line 1268 of file css.c.

int css_probe_device

(

struct subchannel_id

schid

)

Definition at line 317 of file css.c.

void css_sch_device_unregister

(

struct subchannel *

sch

)

css_sch_device_unregister - unregister a subchannel : subchannel to be unregistered

Definition at line 189 of file css.c.

int css_sch_is_valid

(

struct schib *

schib

)

css_sch_is_valid() - check if a subchannel is valid : subchannel information block for the subchannel

Definition at line 362 of file css.c.

void css_sched_sch_todo	(	struct subchannel *	sch,
		enum sch_todo	todo
	)

css_sched_sch_todo - schedule a subchannel operation : subchannel

Todo:

: todo

Schedule the operation identified by

Todo:

to be performed on the slow path workqueue. Do nothing if another operation with higher priority is already scheduled. Needs to be called with subchannel lock held.

Definition at line 437 of file css.c.

void css_schedule_eval

(

struct subchannel_id

schid

)

Definition at line 570 of file css.c.

void css_schedule_eval_all

(

void

)

Definition at line 581 of file css.c.

void css_schedule_reprobe

(

void

)

Definition at line 630 of file css.c.

void css_update_ssd_info

(

struct subchannel *

sch

)

Definition at line 227 of file css.c.

void css_wait_for_slow_path

(

void

)

Definition at line 624 of file css.c.

EXPORT_SYMBOL_GPL

(

css_sch_device_unregister

)

EXPORT_SYMBOL_GPL

(

css_sch_is_valid

)

EXPORT_SYMBOL_GPL

(

css_sched_sch_todo

)

EXPORT_SYMBOL_GPL

(

css_schedule_reprobe

)

EXPORT_SYMBOL_GPL

(

css_driver_register

)

EXPORT_SYMBOL_GPL

(

css_driver_unregister

)

int for_each_subchannel	(	int(*)(struct subchannel_id, void *)	fn,
		void *	data
	)

Definition at line 41 of file css.c.

int for_each_subchannel_staged	(	int(*)(struct subchannel *, void *)	fn_known,
		int(*)(struct subchannel_id, void *)	fn_unknown,
		void *	data
	)

Definition at line 107 of file css.c.

struct subchannel* get_subchannel_by_schid ( struct subchannel_id  schid )

read

Definition at line 348 of file css.c.

MODULE_LICENSE

(

"GPL"

)

int sch_is_pseudo_sch

(

struct subchannel *

sch

)

Definition at line 1106 of file css.c.

subsys_initcall

(

channel_subsystem_init

)

subsys_initcall_sync

(

channel_subsystem_init_sync

)

Variable Documentation

struct channel_subsystem* channel_subsystems[__MAX_CSSID+1]

Definition at line 37 of file css.c.

struct workqueue_struct* cio_work_q

Definition at line 568 of file css.c.

int css_init_done = 0

Definition at line 34 of file css.c.

int max_ssid

Definition at line 35 of file css.c.